METHOD AND INSTALLATION FOR DECREASING THE LOSSES WHEN STARTING AND SHUTTING OFF A THERMAL STATION, AND TO INCREASE THE POWER AVAILABLE AND TO IMPROVE THE ADJUSTING CAPACITY IN A THERMAL STATION

摘要

According to the method, pressure heat accumulators are incorporated in the steam circuit of the thermal station. Said accumulators are charged by a supply of residual heat produced in the station, for example during the starting or the shutting off or during periods of reduced electric power production, and are discharged, during an increased demand of heat, by releasing heat accumulated in the steam-water circuit. The differences of the electric power provided by the station are compensated by a change of the charge or discharge current of the heat accumulators. In the installation for implementing the method, the accumulators are mounted in a shunt mode, on the water side, with the condensation circuit and are connected, on the steam side, with the network of medium pressure or of the intermediary overheater of the water-vapor circuit, or with the steam inlets of the turbines at medium or low pressure.